Overhead valve attachment for ford motors



R. J. BARRETT AND G. E. BEAN.

OVERHEAD VALVE ATTACHMENT FOR FORD MOTORS.

APPLICATION FILED FEB-10,1917- 1 75 Q6, Patented Apr. 19, 1921,

2 SHEETS -SHEET I.

//v l EA/ TORS:

ollin (I BAYYe'TT AND W6 5815A R. J. BARRETT AND G. E. BEAN.

OVERHEAD VALVE ATTACHMENT FOR FORD MOTORS.

APPLICATION FILED FEB. 10, 1917.

Patented Apr. 19, 1921,

2 SHEE'lS-SHEET 2.

UNITED STATES PATENT FFICE.

ROLIJN J'. BARRETT AND GEORGE E. BEAN, IIIITGHELLVILLE, IOWA.

OVERHEAD VALVE ATTACHMENT FOR FORD MOTORS.

Specification of Letters Patent.

Patented Apr. 19, 1921.

Application filed February 10, 1917. Serial No. 147,777.

an improved construction and arrangement for the valves of internal combustion enines.

6 A further object of this invention is to provide an overhead valve system for the cylinders of engines of the Ford type.

A further object of this invention is to provide an improved water-cooling system for such engines.

Our invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in our claim and illustrated by the accompanying drawings, in which- Figure 1 is a side elevation showing our improvement in position for use on a cylinder block. Fig. 2 is a bottom plan of the head block removed. Fig. 3 is a vertical section of the same. Fig. 4 is an end elevation of the same.

In the construction of the improvement as shown the numeral 10 designates generally a cylinder block of an internal combustion engine, this engine being of the type commonly used on Ford automobiles. The engine cylinder block 10 is provided with a water jacket 11 equipped with attaching means and communication 12 for a pipe (not shown) leading from the bottom of the radiator of the engine and adapted to supply water to said jacket and to the other parts of the device. The top of the cylinder block is removed, and in lieu thereof is substituted a head block 13 having longitudinal and transverse dimensions corresponding to those of the cylinder block, and having a relatively large vertical dimension. The head block 13 is secured to the cylinder block 10 by means of bolts 14 passing through holes 15 in said head block and seated in said cylinder block. The head block 13 is formed with a pluralit of bores 16 (in this instance four in number? in its lower portion corresponding in diameter and registering with the bores of the cylinders of the cylinder block 10. Inclined recesses 17 are formed along one side of the head block 13 and are formed with threaded apertures communicating with the respective bores 16, and lgnition devices or spark plugs 18 are removably mounted in said apertures and adapted to ignite the charge of fuel in the cylinders in a common manner, said spark plugs preferably being arranged at angles of approximately forty-five degrees with the bores.

Valve seats 19 are formed in the tops of the bores 16 of the head block, two of said valve seats for each bore, one seat in each bore being for an ingress valve and the other for an egress valve. Ingress valve devices 20 and egress valve devices 21 are vertically arranged and adapted for vertical reciprocation through the head block 13', and control of the head block, and an expansive coil spring 23 surrounding the stem of the valve device and impinging expansively said washer and a seat in the top of the head block, whereby the valve devices are yield-' ingly held in closing position. Tngress ports 24 lead from a source of fuel supply to the ingress valve seats, and egress ports 25 lead from the egress seats to an exhaust device of common form (not shown).

Brackets 26 are bolted to the top of the head block 13 above the respective cylinders, and pivots 27 are mounted horizontally through tops of said brackets and pivotally support rock arms 28, 29, two of said rocli arms being provided for each bracket and preferably arranged on opposite sides thereof. Each rock arm 28 has an end overlying the upper end of the stem of an ingress valve 20, and each rock arm 29 has an end overlying the upper end of the stem of an egress valve 21. Tappets 30, 31 are slidingly mounted through holes 32, 33 in side portions of the head block 13, extend downwardly through side portions of the cylinder block, and are adapted to be intermittently reciprocated by cam devices (not shown) in a common manner. The tappets 30 control the rock arms 28 and are adapted to open the ingress valves 20, to permit fuel gas to enter, and the tappets 31 control the rock arms 29 and are-adapted to open the egress valves 21, for the escape of burned fuel gases. The tappets 30, 31 preferably are connected to ends of the rock arms 28, 29 by means of ball and socket connections 34. Thus an overhead valve system is provided for internal combustion engines of this type, with all of the well known advantages of such a system.

A Water chamber 35 is provided in the upper portion of the head block 13, said chamber surroundin the bores 16, the ports 24, 25, the sockets 1 and the bearings for the valve stems 20, 21 and for the. tappets 30, 31, said chamber occupyin a relatively large amount of the space within said head block. The chamber 35 has water communication from the water acket 11-of the cylinder block by vertical ports 36, 37, 38 at the a jacket 11 to the chamber 35, to the end.

of cooling the upper portion of the engine and preventing undue heating of the parts due to the explosions occurring therein. A connecting means 39 for a water pipe 40 is provided at one end of the head block 13' and said pipe leads from the chamber 35 back to the bottom of the radiator, therebyestablishing a water circulation from said radiator through the water jacket 11 of the the heads of L-type motors, havin bores coincident with those of the cylin ers of the motor and provided with ports, a V-shaped recess in one side of the block extending the len h thereof, said block also having spark p ug openings inthe bottom' wall of the recess leading direct to the block bores, the axes of said openings being inclined from the vertical, awater passage interposed between the other wall of the recess and said ports, valves for the ports having stems slidable vertically through the block. s rin'gs seated in cavities in the 'top of t e block and about. the stems for urging the valves closed, and means on the block for opening the valves.

. ROLLIN J BARRETT.

GEORGE E. BEAN. 

